ABSTRACT
In the title compound, C35H30N4O3, the spiro C atom connects the five-membered pyrrolidine ring and the indeno-quinoxaline ring system. The pyrrolidine ring adopts a twist conformation. An intra-molecular N-Hâ¯N inter-action between the amino group and the pyrazine ring is observed. In the crystal, mol-ecules are linked by a pairs of C-Hâ¯O hydrogen bonds, forming inversion dimers.
ABSTRACT
In the title compound, C36H31NO4, two spiro links connect the methyl-substituted pyrrolidine ring to the ace-naphthyl-ene and cyclo-hexa-none rings. The cyclo-hexa-none ring is further connected to the dioxalane ring by a third spiro junction. The five-membered ring of the ace-naphthylen-1-one ring system adopts a flattened envelope conformation with the ketonic C atom as flap, whereas the dioxalane and pyrrolidine rings each have a twist conformation. The cyclo-hexa-none ring assumes a boat conformation. Three intra-molecular C-Hâ¯O hydrogen bonds involving both ketonic O atoms as acceptors are present. In the crystal, C-Hâ¯O hydrogen bonds connect centrosymmetrically related mol-ecule into chains parallel to the b axis, forming rings of R 2 (2)(10)and R 2 (2)(8) graph-set motifs.
ABSTRACT
In the title compound, C36H29Cl2NO4, two spiro links connect the methyl-substituted pyrrolidine ring to the ace-naphthyl-ene and cyclo-hexa-none rings. The cyclo-hexa-none ring is further connected to the dioxalane ring by a third spiro junction. The five-membered ring of the ace-naphthylen-1-one ring system adopts a flattened envelope conformation, with the ketonic C atom as the flap, whereas the dioxalane and pyrrolidine rings each have a twist conformation. The cyclo-hexenone ring assumes a boat conformation. An intra-molecular C-Hâ¯O hydrogen-bond inter-action is present. In the crystal, mol-ecules are linked by non-classical C-Hâ¯O hydrogen bonds, forming chains extending parallel to the a axis.
ABSTRACT
In the title compound, [Fe(C5H5)(C34H28N3O)], the four-fused-rings system of the 11H-indeno-[1,2-b]quinoxaline unit is approximately planar [maximum deviation = 0.167â (4)â Å] and forms a dihedral angle of 37.25â (6)° with the plane of the benzene ring of the methyl-benzoyl group. Both pyrrolidine rings adopt a twist conformation. An intra-molecular C-Hâ¯O hydrogen bond is observed. In the crystal, mol-ecules are linked by C-Hâ¯O hydrogen bonds and weak C-Hâ¯π inter-actions, forming double chains extending parallel to the c axis.
ABSTRACT
In the title compound, [Fe(C5H5)(C32H23FN3OS)], both the thia-zolidine ring and the pyrrolidine ring adopt a twist conformation on the N-C(H) bridging bond. Their mean planes are inclined to one another by 10.05â (10)°, and they make dihedral angles of 82.09â (10) and 89.67â (11)°, respectively, with the cyclo-pentane ring. The F atom deviates by -0.0238â (2)â Å from the benzene ring to which it is attached. In the crystal, mol-ecules are linked by a pair of C-Hâ¯O hydrogen bonds, forming inversion dimers.